Day 15
This commit is contained in:
parent
e34db0fa02
commit
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2 changed files with 268 additions and 0 deletions
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@ -9,6 +9,8 @@
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/* Begin PBXBuildFile section */
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2615545A276A6C2C00374D18 /* day14.swift in Sources */ = {isa = PBXBuildFile; fileRef = 26155459276A6C2C00374D18 /* day14.swift */; };
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2615545B276A6C3200374D18 /* common.swift in Sources */ = {isa = PBXBuildFile; fileRef = 269BE5CB2762A08800871C85 /* common.swift */; };
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26155468276A6D0A00374D18 /* day15.swift in Sources */ = {isa = PBXBuildFile; fileRef = 26155467276A6D0A00374D18 /* day15.swift */; };
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26155469276A6D2400374D18 /* common.swift in Sources */ = {isa = PBXBuildFile; fileRef = 269BE5CB2762A08800871C85 /* common.swift */; };
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261F317F2763DACC0018D49C /* day10.swift in Sources */ = {isa = PBXBuildFile; fileRef = 261F317E2763DACC0018D49C /* day10.swift */; };
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261F31802763DACE0018D49C /* common.swift in Sources */ = {isa = PBXBuildFile; fileRef = 269BE5CB2762A08800871C85 /* common.swift */; };
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263BA5B3275E97AA00839C92 /* day5part2.swift in Sources */ = {isa = PBXBuildFile; fileRef = 263BA5B2275E97AA00839C92 /* day5part2.swift */; };
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@ -37,6 +39,15 @@
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);
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runOnlyForDeploymentPostprocessing = 1;
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2615545E276A6CF700374D18 /* CopyFiles */ = {
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isa = PBXCopyFilesBuildPhase;
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buildActionMask = 2147483647;
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dstPath = /usr/share/man/man1/;
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dstSubfolderSpec = 0;
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files = (
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@ -114,6 +125,8 @@
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/* Begin PBXFileReference section */
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26155452276A6C1C00374D18 /* Day14 */ = {isa = PBXFileReference; explicitFileType = "compiled.mach-o.executable"; includeInIndex = 0; path = Day14; sourceTree = BUILT_PRODUCTS_DIR; };
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26155459276A6C2C00374D18 /* day14.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = day14.swift; sourceTree = "<group>"; };
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26155460276A6CF700374D18 /* Day15 */ = {isa = PBXFileReference; explicitFileType = "compiled.mach-o.executable"; includeInIndex = 0; path = Day15; sourceTree = BUILT_PRODUCTS_DIR; };
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26155467276A6D0A00374D18 /* day15.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = day15.swift; sourceTree = "<group>"; };
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261F31772763DAB60018D49C /* Day10 */ = {isa = PBXFileReference; explicitFileType = "compiled.mach-o.executable"; includeInIndex = 0; path = Day10; sourceTree = BUILT_PRODUCTS_DIR; };
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261F317E2763DACC0018D49C /* day10.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = day10.swift; sourceTree = "<group>"; };
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263BA5AB275E978400839C92 /* Day5Part2 */ = {isa = PBXFileReference; explicitFileType = "compiled.mach-o.executable"; includeInIndex = 0; path = Day5Part2; sourceTree = BUILT_PRODUCTS_DIR; };
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@ -141,6 +154,13 @@
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);
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@ -203,6 +223,7 @@
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263BA594275E974800839C92 = {
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isa = PBXGroup;
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children = (
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26155467276A6D0A00374D18 /* day15.swift */,
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26155459276A6C2C00374D18 /* day14.swift */,
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265112962767D16D009B7607 /* day13.swift */,
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263CCF76276606670061B353 /* day12.swift */,
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@ -229,6 +250,7 @@
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263CCF6F2766065B0061B353 /* Day12 */,
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2651128F2767D15A009B7607 /* Day13 */,
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26155452276A6C1C00374D18 /* Day14 */,
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26155460276A6CF700374D18 /* Day15 */,
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name = Products;
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sourceTree = "<group>";
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@ -253,6 +275,23 @@
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productReference = 26155452276A6C1C00374D18 /* Day14 */;
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productType = "com.apple.product-type.tool";
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2615545F276A6CF700374D18 /* Day15 */ = {
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buildConfigurationList = 26155464276A6CF700374D18 /* Build configuration list for PBXNativeTarget "Day15" */;
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buildPhases = (
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2615545C276A6CF700374D18 /* Sources */,
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2615545D276A6CF700374D18 /* Frameworks */,
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2615545E276A6CF700374D18 /* CopyFiles */,
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buildRules = (
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);
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dependencies = (
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);
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name = Day15;
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productName = Day15;
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productReference = 26155460276A6CF700374D18 /* Day15 */;
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productType = "com.apple.product-type.tool";
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261F31762763DAB60018D49C /* Day10 */ = {
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isa = PBXNativeTarget;
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buildConfigurationList = 261F317D2763DAB60018D49C /* Build configuration list for PBXNativeTarget "Day10" */;
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@ -403,6 +442,10 @@
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CreatedOnToolsVersion = 13.1;
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LastSwiftMigration = 1310;
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};
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2615545F276A6CF700374D18 = {
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CreatedOnToolsVersion = 13.1;
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LastSwiftMigration = 1310;
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};
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261F31762763DAB60018D49C = {
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CreatedOnToolsVersion = 13.1;
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LastSwiftMigration = 1310;
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@ -456,6 +499,7 @@
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263CCF6E2766065B0061B353 /* Day12 */,
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2651128E2767D15A009B7607 /* Day13 */,
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26155451276A6C1C00374D18 /* Day14 */,
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2615545F276A6CF700374D18 /* Day15 */,
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);
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};
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/* End PBXProject section */
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@ -470,6 +514,15 @@
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);
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26155469276A6D2400374D18 /* common.swift in Sources */,
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26155468276A6D0A00374D18 /* day15.swift in Sources */,
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runOnlyForDeploymentPostprocessing = 0;
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@ -580,6 +633,41 @@
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name = Release;
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26155465276A6CF700374D18 /* Debug */ = {
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isa = XCBuildConfiguration;
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buildSettings = {
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CLANG_ENABLE_MODULES = YES;
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CODE_SIGN_STYLE = Automatic;
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DEVELOPMENT_TEAM = 722B335UM5;
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ENABLE_HARDENED_RUNTIME = YES;
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LD_RUNPATH_SEARCH_PATHS = (
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"$(inherited)",
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"@executable_path/../Frameworks",
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"@loader_path/../Frameworks",
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PRODUCT_NAME = "$(TARGET_NAME)";
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SWIFT_OPTIMIZATION_LEVEL = "-Onone";
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SWIFT_VERSION = 5.0;
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buildSettings = {
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DEVELOPMENT_TEAM = 722B335UM5;
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ENABLE_HARDENED_RUNTIME = YES;
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LD_RUNPATH_SEARCH_PATHS = (
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"$(inherited)",
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"@executable_path/../Frameworks",
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"@loader_path/../Frameworks",
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PRODUCT_NAME = "$(TARGET_NAME)";
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SWIFT_VERSION = 5.0;
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261F317B2763DAB60018D49C /* Debug */ = {
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buildSettings = {
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@ -948,6 +1036,15 @@
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defaultConfigurationIsVisible = 0;
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defaultConfigurationName = Release;
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26155464276A6CF700374D18 /* Build configuration list for PBXNativeTarget "Day15" */ = {
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isa = XCConfigurationList;
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buildConfigurations = (
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26155465276A6CF700374D18 /* Debug */,
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26155466276A6CF700374D18 /* Release */,
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defaultConfigurationIsVisible = 0;
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171
day15.swift
Normal file
171
day15.swift
Normal file
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@ -0,0 +1,171 @@
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@main
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struct Day15: Puzzle {
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mutating func run() {
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let part1 = find(target: Point(x: width - 1, y: height - 1))
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print("Part 1:", part1)
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let part2 = find(target: Point(x: 5 * width - 1, y: 5 * height - 1))
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print("Part 2:", part2)
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}
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struct Point: Hashable {
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var x: Int
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var y: Int
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var neighbors: [Point] {
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[
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Point(x: x - 1, y: y),
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Point(x: x + 1, y: y),
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Point(x: x, y: y - 1),
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Point(x: x, y: y + 1)
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]
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}
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}
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func find(target: Point) -> Int {
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var current = Point(x: 0, y: 0)
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var totalCost = 0
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var possible: [Point: Int] = [:]
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var visited: Set<Point> = []
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func isInside(_ point: Point) -> Bool {
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0...target.x ~= point.x && 0...target.y ~= point.y
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}
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while current != target {
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visited.insert(current)
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for n in current.neighbors where isInside(n) && !visited.contains(n) {
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possible[n] = min(possible[n, default: .max], totalCost + self[n])
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}
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(current, totalCost) = possible.min { $0.value < $1.value }!
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possible.removeValue(forKey: current)
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}
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return totalCost
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}
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subscript(point: Point) -> Int {
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self[point.x , point.y]
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}
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subscript(x: Int, y: Int) -> Int {
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let repX = x / width
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let xPos = x % width
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let repY = y / height
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let yPos = y % height
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return (input[xPos + width * yPos] + repX + repY - 1) % 9 + 1
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}
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let width = 100
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let height = 100
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let input: [Int] = """
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||||
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||||
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||||
8978798318873934543151823824117132228417869392811216547172919119998739911121199246294815175868992773
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||||
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||||
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||||
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||||
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||||
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||||
8797112815141319881991983914861912838966446818811271274141461487947171138945321912192198815813211761
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||||
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||||
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||||
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||||
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||||
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||||
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|
||||
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||||
6717218734155417511564162235845524121493736962442884479191718924594119911521121422231982184671122116
|
||||
9346412964321187889663345611132183519588187791111227269112129947122999176114184938494824342939375892
|
||||
2912811929919891428891223818529115949522464779949526791515797886471246181118183121786524127979998512
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||||
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|
||||
3239161911151141369392413114665193927469988999219478935992541193184945926828911597158489999651151172
|
||||
9229716159183212219791136121569512978927999177196111291668152292896495877722611129462617229299962112
|
||||
5994461796358342348216915883991574569784887978731368749888449599246152414391635925763156831839199496
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||||
1569319989929452917219726368583887924179117119284971126181346919789949393972171262535283921926293357
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||||
9983673949614595396426594299567925779229751982433631919159114841538978735893759492592481573495963491
|
||||
3725632421623191323789991288299296415942162988289929992238877153268488127718372211951117951486111926
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||||
1219319492614741819142363452974731825929485665978219725131218962626179997611254524524915768686381164
|
||||
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|
||||
3483959252172951953519211189255336234459522397526829492685113849198611624111948187714151963198671919
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||||
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|
||||
6868958791119815122313931178313637489923479492171741443993619161318781194421239654468391996636923611
|
||||
6999166111129212624151555925991311538952878946191234511973499736237742491811348911419449161895978178
|
||||
3532973784281182181552481928144111246711742443831184236962981395142863562121961323169398316921741321
|
||||
8433727191521455193223914171391447439164791659118411391327413285243717794299999523811137619197999791
|
||||
8169125649963232439519311131691539694589231314268683691811431259295132344195953951287639889737849189
|
||||
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|
||||
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|
||||
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||||
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|
||||
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|
||||
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||||
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||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
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|
||||
1316191719349114251772629411233483317516143684488291792691839198723174287211241498955137331159443961
|
||||
1295632882814319179937625629218199381191127966181781921829819969815912382191294796979515315471941392
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||||
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|
||||
""".compactMap { $0.wholeNumberValue }
|
||||
|
||||
}
|
||||
Loading…
Add table
Reference in a new issue